ST7MC1xx/ST7MC2xx
I/O PORTS (Cont’d)
9.5.1 I/O Port Implementation
The I/O port register configurations are summa-
rised as follows.
Standard Ports
PA4, PA2:0, PB5:0, PC7:4,
PD7:6, PE5:0, PF5:0, PG7:0, PH7:0
MODE
floating input
pull-up input
open drain output
push-pull output
DDR OR
0
0
0
1
1
0
1
1
Interrupt Ports
PA6, PA3, PB6, PC3, PC1, PD5, PD4, PD2 (with
pull-up)
MODE
floating input
pull-up interrupt input
open drain output
push-pull output
DDR OR
0
0
0
1
1
0
1
1
PA7, PA5, PB7, PC2, PC0, PD6, PD3, PD1 (with-
out pull-up)
MODE
floating input
floating interrupt input
open drain output
push-pull output
DDR OR
0
0
0
1
1
0
1
1
Table 12. Port Configuration
Port
Port A
Port B
Port C
Port D
Port E
Port F
Port G
Port H
Pin name
PA7, PA5
PA6, PA3
PA2:0
PB7
PB6
PB5:0
PC7:4
PC3, PC1
PC2, PC0
PD7, PD0
PD6, PD3, PD1
PD5, PD4, PD2
PE5:0
PF5:0
PG7:0
PH7:0
OR = 0
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
floating
Input
OR = 1
floating interrupt
pull-up interrupt
pull-up
floating interrupt
pull-up interrupt
pull-up
pull-up
pull-up interrupt
floating interrupt
pull-up
floating interrupt
pull-up interrupt
pull-up
pull-up
pull-up
pull-up
Output
OR = 0
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
open drain
OR = 1
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
push-pull
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